<!DOCTYPE HTML>
<html>
  <head>
    <title>Access Denied</title>
    <style type="text/css">
      h1 {text-align: center;}
    </style>
  </head>
  <body>
    <h1>Access Denied!</h1>
    <p>
      The action you attempted requires the proper credentials to perform. Please
      re-enter your username and password to try again.
    </p>
  </body>
</html>